Molding-machine for cutting panels.



4PATENNLBN MAR. 24, 1908.`

P. SANDERS. Mo-LDING MACHINE P0P; CUTTING PANELS.

APPLICATION FILED JUNE 7. 1907.

2 SHBETB-BHEET 1.

W1 TNESSES "Il )mills Pxrlls co4. lnxumaronfn. t4

PATENTED MAR.'24, 1908.

y No. 888,148.

P. SANDERS. MOLDING MACHINE P08 CUTTING PANBLS.

APPLICATION FILED JUNE 7, 1907.

2 SHEETS-SHEET 2.

V. N, Y B,

WIM/55555 UNITED sTATEs PATENT oEEroE. i

FRANK SANDERS, OF MCKEESPORT, PENNSYLVANIA.

MOLDING-MACHINE FOR CUTTING PANELS.

To all whom it may concern:

Be it known that I, FRANK SANDERS, a citizen of the United States of America, residing at McKeesport, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements' in Molding Machines for Cutting Panels, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to molding machines for cutting panels, and the invention has for its object to provide a novel guide and resilient clamp for molding machines, the guide and clamp being constructed to steady a piece of work while being operated upon by the cutter blades of the machine.

My improvements can be readily embodied in the ordinary molding machine at present used or may be constructed as an attachment for the machines. In either instance, I employ a detachable shield for the revoluble cutter blades of the machine, to deect the shavings and protect an operators hand from accidentally contacting with the cutter blades.

The detail construction entering into my invention will be more fully described and then specifically pointed out in the appended claims, and referring to the drawing forming part of this specification, like numerals of reference designate corresponding parts throughout the several views, 1n which Figure 1 is a plan of my improved molding machine, Fig. 2 is a front elevation with the cutter removed, Fig. 3 is a rear elevation with the cutter removed, Fig. 4 is an end view, Fig. 5 is a cross sectional view, Fig. 6 is a plan of a shield used in connection with the machine, Fig. 7 is a plan of the cutter blades of a molding machine, Fig. 8 is an elevation of the same, Fig. 9 is a sectional view of a lock nut used in connection with the cutter blades, Fig. 10 is a fragmentary sectional view of the upper cutter blades, Fig. 11 is a fragmentary sectional view of the lower cutter blades, Fig. 12 is an end view of a piece of work that has been operated upon by the machine.

- In the accompanying drawings, 1 designates either the top late of a molding machine or a plate a apted to be` suitably clamped upon the top of the molding machine. The plate intermediate its ends and at its rear edge is cut away as at 2, to accommodate the cutting blades of the molding Specification of Letters Patent.

Application filed J une 7, 1907.

said boards terminatin Patented March 24, 1908. serial No. 377,698.

machine. These blades Aare illustrated in Figs. 1, 7 to 1 1 inclusive and consist of lower cutter blades 3 and upper cutter blades 4, the lower set of cutter blades 3 com rising threaded sleeve 5 having tangentialy disposed arms 6 providedv with detachable cutting blades 7. The sleeve 5 is adapted to iit u on the driven vertically disposed spindle of a molding machine. The upper set of cutter blades 4 comprises an interiorly and exteriorly threaded split sleeve 8 having arms and blades similar to the lower set of cutting blades. After the upper set of cutting blades is mounted upon the threaded sleeve 5, a desired distance above the lower set of cutting blades, a lock nut 9 is placed upon the split threaded sleeve 8 to clamp the same in engagement with the threaded sleeve 5.

The plate 1 is provided with longitudinally disposed guide boards 10, the inner ends of at side boards 11 arran ed at the edges of t e cut away portion 2 of t e plate 1. The upper edges of the side boards 1 1 are provided with revoluble eyelets or winged thumb screws 12, the` object of which will presently appear.

The'inner ends of the guideboards 10 are recessed, as at 14, and extending into said recesses are the ends of a guard rail 15, said rail being raised and lowered through the medium of screw bolts16 passing downwardly through the guide boards 10 and engagin the ends of the guard rail 15. The guard rai 15 is-adapted to lie between the upper and lower sets of cutting blades 3 and 4, said rail limiting the inward movement of a piece of work and preventing the same from contact-4 ing with the revoluble threaded sleeve 5 of the lower set of cutting blades 3.

Hinged to the rear edge of the plate 1, as at 17, are two curved straps 18, the free ends of said straps being provlded with a clamp board 19 which is cut away as at 20, to conform to the curvature of the cut away portion 2 of the plate 1.

The guide boards 10 are recessed, as at 21, and provided with upwardly extending screw bolts 22, said bolts passing through openings formed in the straps 18 and being provided with coiled springs 23 adapted to normally hold the straps 18 within the recesses 21 of the guide boards 10.

Adapted to fit over the sets of cutting blades 3 andv4 is a shield 24, said shield being provided with a central opening 25 to reboard being elevated by placing the springs ceive the u `per end of the threaded sleeve 5 and with s ots or elongated openings 26 to receive the screw eyelets l2 of the side boards, said eyelets being partially rotated to lock the shield in position over the cutting blades.

The piece of work to be operated upon is placed beneath the clamping board 19, said 23 under tension, said springs normal y maintaining the clamp board 19 upon the top of the piece of work and preventing it from being dislodged while operated upon by the cutting blades of the molding machine. The guide boards 10 serve to guide and steady a piece of work while a workman or operator is moving the piece of work in front of the cutting blades of the machine. It will thus be observed that when the edge of a piece of work, such as a board, is presented to the cuttin blades, that the top and bottom edges of the board or piece of work will be cut away, as at 27 in Fi l2 of the drawings. It is apparent from t e illustration of my invention that a workman can easily and quickly manipulate a piece of work upon the molding machine, and that by using my improvement, the efficiency of the machine is considerably increased and a more even and uniform piece of work produced. After the cutting blades and the guard rail have been proper y set, there is very little danger of a piece of work being ruined by the negligence of the workman or operator.

It is obvious that such variations in the size, proportion and minor details of my invention as are permissible by the appended claims, may be resorted to without departing from the spirit and scope of the invention.

What I claim and desire to secure by Letters Patent, is

1. In a molding machine, the combination with two sets of adjustable and revoluble cutting blades, of a plate cut away to clear said blades, guide boards carried by said plate,

side boards carried by said plate, a guard rail ad justably mounted between the confronting ends of said guide boards and arranged between said sets of cutting blades, a clamp board hinged to the rear edge of said plate and resiliently connected to the upper edges of said guide boards, and a shield detachably secured to the upper edges of said side boards.

2. In a molding machine, the combination with two sets of adjustable and revoluble cuttin blades, of a plate cut away to clear said b ades, longitudinally disposed guide boards carried by said plate, a guard rail eX- tending between the sets of said blades and having its ends adjustably held in the ends of said guide boards, a clamp board hin ed to the rear edge of said plate, and resi 'ently connected to said guide boards, and a shield detachably mounted over said blades.

In testimony whereof I affix my signature in the presence of two witnesses.

FRANK SANDERS.

Witnesses:

MAX II. SnoLoviTz, K. H. BUTLER. 

